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4×a-b:3+5×c+d:6 stiind ca a=(9000-75:5-8905):4​

Răspuns :

Răspuns:

a = ( 9000 - 75 : 5 - 8905 ) : 4

a = ( 9000 - 15 - 8905 ) : 4

a = ( 8985 - 8905 ) : 4

a = 80 : 4

a = 20

b = 76 × 8 × ( 2987 - 2986 ) - 575

b = 76 × 8 × 1 - 575

b = 608 × 1 - 575

b = 608 - 575

b = 33

c = 3000 - ( 48 × 7 - 85 : 5 ) - 2669

c = 3000 - ( 326 - 17 ) - 2669

c = 3000 - 309 - 2669

c = 2691- 2668

c = 23

d = 76 : 4 + 45 × 4 + 9 : 9 - 146

d = 24 + 45 × 4 + 9 : 9 - 146

d = 24 + 180 + 9 : 9 - 146

d = 24 + 180 + 1 - 146

d = 204 + 1 - 146

d = 205 - 146

d = 54

4 × a - b : 3 + 5 × c + d : 6 = 294

= 4 × 20 - 33 : 3 + 5 × 23 + 54 : 6

= 80 - 33 : 3 + 5 × 23 + 54 : 6

= 80 - 11 + 5 × 23 + 54 : 6

= 80 - 11 + 115 + 54 : 6

= 80 - 11 + 115 + 9

= 80 + 115 + 9

= 195 + 9

= 294

Explicație pas cu pas: